Why Are Ligaments Part of the Muscular System?

Ligaments are fibrous tissues that hold bones together. Ligaments are similar in construction to tendons. Together with tendons, which attach muscles with bones, ligaments aid in the movement of your body's joints.

Structure

• Ligaments are made up mostly of collagen and elastin. They also contain a small amount of blood vessels. Ligaments are considered soft connective tissues in the muscular system.

Functions

• Ligaments serve to hold your bones together. They help the bones bear the weight load your activities put upon them. Ligaments also prevent injury to the bones by limiting the range of motion at the joints.

Location

• Ligaments are located at all joints in your body. These joints include the neck, shoulders, elbows, wrists, knees and ankles. Ligaments are responsible for binding together the bones in your hands and feet.

Treatment for Injuries

• Ligament injuries occur from stress placed on a joint. For example, when you injure your knee, not only are the muscles strained but the ligaments are strained also. Treatment for an injury to a ligament is similar to the treatment for an injured muscle. Rest, ice, compression and elevation are recommended. Physical therapy, such as stretching, can help to restore an injured ligament back to health.

Structure of Bones vs. Ligaments

• While it may seem that ligaments should be a part of the skeletal system, they are closer to muscles in structure. Bones are hard, porous tissues that are made up mostly of calcium and other minerals. The similarity in structure to muscles and the action of the ligaments in aiding motion are why ligaments are considered part of the muscular system.